An Early Cretaceous, medium-sized carcharodontosaurid theropod (Dinosauria, Saurischia) from the Mulichinco Formation (upper Valanginian), Neuquen Province, Patagonia, Argentina

被引：20
作者：
Coria, Rodolfo A. [1 ]
Currie, Philip J. [2 ]
Ortega, Francisco [3 ]
Baiano, Mattia A. [1 ,4 ]
机构：
[1] CONICET Museo Carmen Funes, Av Cordoba 55, RA-8318 Plaza Huincul, Neuquen, Argentina
[2] Univ Alberta, Biol Sci CW405, Edmonton, AB T6G 2E9, Canada
[3] UNED, Fac Ciencias, Senda Rey 9, Madrid 28040, Spain
[4] CONICET IIPG, Av Roca 1242, RA-8322 Gen Roca, Rio Negro, Argentina
来源：
CRETACEOUS RESEARCH | 2020年 / 111卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Lajasvenator; Carcharodontosauridae; Theropoda; Valanginian; Patagonia; ANATOMY; XINJIANG; BASIN; ASIA;
D O I：
10.1016/j.cretres.2019.104319
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
A new carcharodontosaurid taxon, Lajasvenator ascheriae gen. et sp. nov. is described. The new taxon is based on two specimens: MLL-PV-Pv-005 is a partial skeleton represented by a portion of the snout, partially articulated presacral vertebral series, four articulated caudal vertebra and fragments of the pelvic girdle; MLL-PV-Pv-007 includes the anterior ends of both dentaries, a quadratojugal, and fragments of cervical vertebrae, ribs and a possible tarsal bone. Lajasvenator is unique in having anterior projections on cervical prezygapophyses, lip-like crests on the lateral surfaces of cervical post-zygapophyses, and bilobed anterior processes on cervical ribs. Lajasvenator material was collected from the terrestrial sandstones of the Valanginian Mulichinco Formation. It is the oldest carcharodontosaurid record from South America. This medium sized theropod was found associated with remains of the dicraeosaurid sauropod Pilmatueia, indeterminate diplodocid remains, and a yet unidentified iguanodontian-like ornithopod. (C) 2019 Elsevier Ltd. All rights reserved.
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页数：20
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